Hose end



March 1, 1949.A

R. A. MEN-ral. 2,463,293

HOSE END 'Filed Feb. 18,1946

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Patented Mar. l, 1949 nosa ENT Raymond A. Montel, East Cleveland, 0h10,al-

signor to The Weather-head Company, Cleveland, Ohio, a corporation ofh10 Application February 18, 1946, Serial No. 648,328

s claims. (ci. 28s-s4) This invention relates to a hose end, moreparticularly to a hose end designed to be attached to a flexible hose ortube which includes a layer of w1re braid.

As a general rule, fittings of the class to which this invention relateshave included an internal sleeve member forced into the aperture of thehose and an external member formed to grip the hose itself and theinternal sleeve member. It has been found that tubing and hoses whichinclude a layer of wire braid present certain difficulties when providedwith the conventional type of fitting. The most serious' dimcultyresults from the puncturing or perforation of the innermost layer of thehose by the wire braid and leakage often occurs in such arrangements. Itis an object of this invention to eliminate all possibility of injury ofthe rubber parts of the hose by the wire braid by the provision of aspecial hose end that Acontains a member which acts as a guard betweenthe wire braid and the inner rubber portion of the hose.

Another dimculty encountered with prior art hose ends when used on hoseswhich include wire braid is that of leakage around the parts due to therelatively loose fit obtained when crimping wire braid and rubbertogether. It is another object of this invention to insure that noleakage can develop by the provision of a fitting especially adapted foruse with hoses of the type containing wire braid. Other objects andadvantages of this invention will become apparent as the followingdescription of the device proceeds.

In the drawings:

Fig. 1 is an exploded cross-sectional view of various parts of the hoseend or fitting.

Fig. 2 is a cross-sectional viewn of the fitting mounted on a hose.

Referring to Fig. 1 it can be seen that the fitting is made up of i'ourbasic members. Nut A is provided for attachment of the hose end with asuitable fitting. Nut A is mounted. for rotation on a sleeve member B,and has internal threads I and a flanged portion 2 which cooperates withan enlarged portion 8 ofsleeve member B to retain the nut. Sleeve memberB has uid conducting aperture 4 and external ribs 5 for engagement withthe hose. AAnother sleeve member C is provided which member willhereinafter be referred to as the guard member. The guard member Cincludes a body portion 8 and member D completes the fitting, thismember having internal serratlons or ribs 9.

As can be seen in Fig. 2 the fitting is assembled in such a manner thatmembers B, C and D are in effect integral, this being accompanied bysoldering or brazing parts B, C and D at areas II and I2. The fitting isapplied to the hose in f the extent of the serrations as on the sleevevmember D. 'I'he fitting itself is placed in a lathe or other rotatingdevice so that it may be continuously rotated. The hose is then appliedto the end of the fitting with which sleeve member B enters the aperturein the hose, and guard portion 1 of member C works `its way between thewire braid and the inner layer of rubber I3. This action is facilitatedby the sharp edge 8 of sleeve member C. At the same time, sleeve memberD is being forced along the Wire braid but this member is of such adiameter that thel ribs 9 thereon exert very little, if any, pressureagainst the braid during the initial assembly. After the fitting hasbeen forced into the hose as describedabove, a crimping operation isperformed upon the sleeve D which causes it to become reduced indiameter as shown in Fig. 2 thereby crimping the braid against guardportion 1 of sleeve C. A compression is also put on guardportion 1 bythis operation which forces the inner layer of rubber I3 firmly againstthe ribs 5 on inner sleeve member B.

Those skilled in the art will readily appreciate the advantages whichare derived from this novel hose end. First, guard member 1 protects theinner rubber portion I3 of the hose from any perforation or lacerationby wire braid Il of the This is highly important because any! around thettlng would cause leakage. An-i other advantage in this arrangement isthat a very strong joint is produced which joint will withstand severeaxial loads before the fittingl will pull free of the hose. The strengthof this joint results from the fact that two gripping actions'take placebetween the hose and the fitting. First, there is the gripping actiontaking place between the sleeve D, guard portion 1 of sleeve C and the'wire braid Il. Next, there is an axially extending guard or lip portion1 terminating in a sharp edge The external sleeve the gripping actionbetween guard portion 1 and ribs 5 of sleeve B which action firmly gripsthe inner rubber layer I3 of the hose.

Another advantage resulting from this arerangement lies in the factthata hose tted in accordance with this invention tends to be self-v sealingagainst leakage. For example, assume that a small amount of nuidtendsto' ieak past ribs Stof sleeve B'. As this uld continues it canonly leakout by traveling between the inner surface of guard member 1 and theouter surface of rubber layer I3 of the hose. If the uid gets this farthe f pressure against it tends to still further increase the grippingaction which takes place between ribs 5 of sleeve B and rubber layer I8of the hose. For thisreason if by any chance leakage does start it israpidly stopped by the pressure of the fluid itself, this b enecial andunexpectdresult being a function of guard portion 'I in the fitting. i

Although a preferred embodiment of the in-l l vention is shown in thedrawings,l those skilled in the art will appreciate that minorlmodifications may be made withoutdepartin'g from the l spirit of theinvention. For example, guard mem' ber 1 which is shown integral withbody portion 8 and sleeve C in the drawings could be made of separatetubular'stock welded or brazed yto the body portion 8; 4Likewise theexact number and shape of the ribs 5 and 9 can be modied slightlywithout altering the operation of the device. Furthermore, although anattaching nut A is shown in the drawing for connecting the layer couldbe made,up of any number of layers of rubber or rubber and fabric, thebasic principle being unchanged that the guard member 'l of the ttingprotects the inner layersI of rubber or rubber and fabric from the wirebraid'. Likewise,.i't would not be necessary to show the outer layer ofrubber entirely down to the wire braid in order for the itting tofunction. n

Having thus described the present invention so that others skilled inthe art may be able to understand and practice the saine.4 I state thatwhat I desire to secure by Letters Patent is defined in what is claimed.

What is claimed is:

1. In combination with a hose which comprises a layer of flexiblenon-metallic material surrounded by a layer of wire braid, a`unitarytting having an inner sleeve member positioned within e the aperture ofsaid hose. an intermediate member having a guard portion with relativelythin walls positioned between said wire braid and said 5 non-metalliclayer of material, and an outer sleeve memberformed to compress saidwire braidv against said guard portion, said outer sleeve member havinga ribbed internal diameter substantially equal to'the diameter of thehose and being radially deformable to compress the hose between tliheguard member and the insert and between said sleeve and the guardmember.

2: In combination with a hose which comprises a layer of flexiblenon-metallic material surthe aperture of said hose, an intermediatemember having a guard portion with relatively thin inner sleeve member,an outer sleevel member and an intermediate member having an axiallyextending cylindrical guard portion said guard portion having relativelythin walls, said outer 85 sleeve member having a portion overlying saidguard member of an internal diameter substantially equal to the diameterof the hose and radially deformable to compress a layer of. hosebetween'the guard member and the insert,

40 said guard member beingl deformable due'to REFERENCES CITEDThafollowing references are of record in the ille vof this patentz.

UNITED STATES PATENTS roundedv by alayer of wire braid. a unitaryntting, having an inner sleeve member positioned within :wallspositioned between said wire braid and 20 50 Number n ,v Name Date2,076,632 Goodall Apr. 13, 1937 2,328,819 Luebkeman ---1---- Sept. 7,1943 n

